Chuuya Nakahara is a Port Mafia executive. He is the top martial artist, and feared by many. He will not run away from a fight, which he wins anyway. Even though he is in a mafia, Chuuya can be very kind and thoughtful. He can also be extremely reasonable, unless he is angered. He hates Osamu Dazai, his rival/enemy more than anything. He is very romantic to his lover. He can be very overprotective to his lover. He can be a yandere